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Use JavaScript and CSS to "center horizontally and vertically in a page" clock

Source: Internet
Author: User
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Idea: The most troublesome thing to achieve is to center horizontally and vertically, where vertical centering is the most troublesome. Considering the browser compatibility, the Web read some information, found in the vertical center of the page is really no good way. The position:fixed attribute is used to control the absolute position of the clock, to obtain the width and height of the clock through clientwidth and clientheight, and to center the clock with JavaScript control marginleft and margintop.

The code is as follows:

<!doctype html>

Use JavaScript and CSS to "center horizontally and vertically in a page" clock

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Related Keywords:
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